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JavaScript - draw square on canvas element

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Created by:
Olivier-Myers
454

In this article, we would like to show you how to draw a square on an HTML canvas element using JavaScript.

Quick solution:

var canvas = document.querySelector('#my-canvas');
var context = canvas.getContext('2d');
context.beginPath();
context.rect(10, 10, 100); // rect(x, y, side)
context.stroke();

 

Practical example

In this section, we present a practical example of how to use rect() method to draw a square on the canvas.

// ONLINE-RUNNER:browser;

<!doctype html>
<html>
<head>
  <style>
    
    #my-canvas { border: 1px solid gray; }
    
  </style>
</head>
<body>
  <canvas id="my-canvas" width="200" height="200"></canvas>
  <script>

    var canvas = document.querySelector('#my-canvas');
    var context = canvas.getContext('2d');

    function drawSquare(x, y, side) {
        context.beginPath();
        context.rect(x, y, side, side); // rect(x, y, width, height)
        context.stroke();
    }

    drawSquare(30, 30, 100);

  </script>
</body>
</html>

References

  1. CanvasRenderingContext2D.rect() - Web APIs | MDN

Alternative titles

  1. JavaScript - draw square on HTML canvas element
  2. JavaScript - rect() square on HTML canvas element
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JavaScript - HTML5 canvas tutorial

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